<template>
  <div class="app-container">
    <el-form :model="queryParams" ref="queryRef" :inline="true" v-show="showSearch" label-width="68px">
      <el-form-item label="学生姓名" prop="name">
        <el-input
          v-model="queryParams.name"
          placeholder="请输入学生姓名"
          clearable
          @keyup.enter="handleQuery"
        />
      </el-form-item>
      <el-form-item label="班级" prop="classId">
        <el-select
            v-model="queryParams.classId"
            placeholder="请选择班级"
            size="normal"
            style="width: 240px"
            @focus="onSelectOptionFocus"
        >
          <el-option
              v-for="item in options"
              :key="item.value"
              :label="item.label"
              :value="item.value"
          />
        </el-select>
      </el-form-item>
      <el-form-item label="生日" style="width: 308px">
        <el-date-picker
            v-model="queryParams.birthdayParams"
            value-format="YYYY-MM-DD"
            type="daterange"
            range-separator="-"
            start-placeholder="开始日期"
            end-placeholder="结束日期">
        </el-date-picker>
      </el-form-item>
      <el-form-item>
        <el-button type="primary" icon="Search" @click="handleQuery">搜索</el-button>
        <el-button icon="Refresh" @click="resetQuery">重置</el-button>
      </el-form-item>
    </el-form>

    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button
          type="primary"
          plain
          icon="Plus"
          @click="handleAdd"
          v-hasPermi="['system:student:add']"
        >新增</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="success"
          plain
          icon="Edit"
          :disabled="single"
          @click="handleUpdate"
          v-hasPermi="['system:student:edit']"
        >修改</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="danger"
          plain
          icon="Delete"
          :disabled="multiple"
          @click="handleDelete"
          v-hasPermi="['system:student:remove']"
        >删除</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="normal"
          plain
          icon="Download"
          @click="handleExport"
          v-hasPermi="['system:student:export']"
        >导出</el-button>
      </el-col>
      <right-toolbar v-model:showSearch="showSearch" @queryTable="getList"></right-toolbar>
    </el-row>

    <el-table v-loading="loading" :data="studentList" @selection-change="handleSelectionChange">
      <el-table-column type="selection" width="55" align="center" />
      <el-table-column label="id" align="center" prop="id" />
      <el-table-column label="学生姓名" align="center" prop="name" />
      <el-table-column label="性别" align="center" prop="sex" >
      </el-table-column>
      <el-table-column label="生日" align="center" prop="birthday" >
        <template #default="scope">
          <span>{{ parseTime(scope.row.birthday, '{y}-{m}-{d}') }}</span>
        </template>
      </el-table-column>
      <!--      <el-table-column label="班级id" align="center" prop="classId" />-->
      <el-table-column label="班级" align="center" prop="schoolClass.className" />
      <el-table-column label="操作" align="center" class-name="small-padding fixed-width">
        <template #default="scope">
          <el-button link type="primary" icon="Edit" @click="handleUpdate(scope.row)" v-hasPermi="['system:student:edit']">修改</el-button>
          <el-button link type="primary" icon="Delete" @click="handleDelete(scope.row)" v-hasPermi="['system:student:remove']">删除</el-button>
        </template>
      </el-table-column>
    </el-table>
    
    <pagination
      v-show="total>0"
      :total="total"
      v-model:page="queryParams.pageNum"
      v-model:limit="queryParams.pageSize"
      @pagination="getList"
    />

    <!-- 添加或修改学生信息对话框 -->
    <el-dialog :title="title" v-model="open" width="500px" append-to-body>
      <el-form ref="studentRef" :model="form" :rules="rules" label-width="80px">
        <el-form-item label="学生姓名" prop="name">
          <el-input v-model="form.name" placeholder="请输入学生姓名" />
        </el-form-item>
        <el-form-item label="班级id" prop="classId">
<!--          <el-input v-model="form.classId" placeholder="请输入班级id" />-->
          <el-select
              v-model="form.classId"
              placeholder="请选择班级"
              size="normal"
              style="width: 240px"
              @focus="onSelectOptionFocus"
          >
            <el-option
                v-for="item in options"
                :key="item.value"
                :label="item.label"
                :value="item.value"
            />
          </el-select>
        </el-form-item>

        <el-form-item label="性别" prop="sex">
          <el-radio-group v-model="form.sex">
            <el-radio
                v-for="dict in sys_user_sex"
                :key="dict.value"
                :value="dict.value"
            >{{ dict.label }}</el-radio>
          </el-radio-group>
        </el-form-item>

        <el-form-item label="生日" prop="birthday">
          <el-date-picker
              v-model="form.birthday"
              type="date"
              placeholder="请选择日期"
              size="normal"
          />
        </el-form-item>

      </el-form>
      <template #footer>
        <div class="dialog-footer">
          <el-button type="primary" @click="submitForm">确 定</el-button>
          <el-button @click="cancel">取 消</el-button>
        </div>
      </template>
    </el-dialog>
  </div>
</template>

<script setup name="Student">
import { listStudent, getStudent, delStudent, addStudent, updateStudent, listStudentWithClass } from "@/api/system/student"
import { getClassSelectOptionFromServer } from "@/api/system/student"
import { onMounted} from "vue";

const { proxy } = getCurrentInstance()
const { sys_user_sex } = proxy.useDict("sys_user_sex")

const studentList = ref([])
const open = ref(false)
const loading = ref(true)
const showSearch = ref(true)
const ids = ref([])
const single = ref(true)
const multiple = ref(true)
const total = ref(0)
const title = ref("")

const data = reactive({
  form: {},
  queryParams: {
    pageNum: 1,
    pageSize: 10,
    name: null,
    sex: null,
    classId: null,
    birthdayParams: []
  },
  rules: {
    classId: [
      { required: true, message: "班级id不能为空", trigger: "blur" }
    ],
  }
})

const { queryParams, form, rules } = toRefs(data)

/** 查询学生信息列表 */
function getList() {
  loading.value = true
  // listStudent(queryParams.value).then(response => {
  listStudentWithClass(queryParams.value).then(response => {
    studentList.value = response.rows
    total.value = response.total
    loading.value = false
  })
}

const options = ref([]);
function getClassSelect() {
   getClassSelectOptionFromServer().then(response =>{
     /*后台传递过来的值会存储到response.data中，将response.data值赋值给options之后
     vue会根据options的新值重新渲染下拉列表
     */
     options.value = response.data;
  })
}

// 下拉列表获取焦点时触发
function onSelectOptionFocus(){
  getClassSelect();
}


// 取消按钮
function cancel() {
  open.value = false
  reset()
}

// 表单重置
function reset() {
  form.value = {
    id: null,
    name: null,
    sex: null,
    classId: null,
    createTime: null
  }
  proxy.resetForm("studentRef")
}

/** 搜索按钮操作 */
function handleQuery() {
  queryParams.value.pageNum = 1
  getList()
}

/** 重置按钮操作 */
function resetQuery() {
  proxy.resetForm("queryRef")
  handleQuery()
}

// 多选框选中数据
function handleSelectionChange(selection) {
  ids.value = selection.map(item => item.id)
  single.value = selection.length != 1
  multiple.value = !selection.length
}

/** 新增按钮操作 */
function handleAdd() {
  reset()
  open.value = true
  title.value = "添加学生信息"
}

/** 修改按钮操作 */
function handleUpdate(row) {
  reset()
  const _id = row.id || ids.value
  getStudent(_id).then(response => {
    form.value = response.data
    open.value = true
    title.value = "修改学生信息"
  })
}

/** 提交按钮 */
function submitForm() {
  proxy.$refs["studentRef"].validate(valid => {
    if (valid) {
      if (form.value.id != null) {
        updateStudent(form.value).then(response => {
          proxy.$modal.msgSuccess("修改成功")
          open.value = false
          getList()
        })
      } else {
        addStudent(form.value).then(response => {
          proxy.$modal.msgSuccess("新增成功")
          open.value = false
          getList()
        })
      }
    }
  })
}

/** 删除按钮操作 */
function handleDelete(row) {
  const _ids = row.id || ids.value
  proxy.$modal.confirm('是否确认删除学生信息编号为"' + _ids + '"的数据项？').then(function() {
    return delStudent(_ids)
  }).then(() => {
    getList()
    proxy.$modal.msgSuccess("删除成功")
  }).catch(() => {})
}

/** 导出按钮操作 */
function handleExport() {
  proxy.download('system/student/export', {
    ...queryParams.value
  }, `student_${new Date().getTime()}.xlsx`)
}

onMounted(() => {
  getList();
  getClassSelect();
})

</script>
